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  1. #include<bits/stdc++.h>
  2. #define int long long
  3. using namespace std;
  4. const int oo =1e18;
  5.  
  6. int m, n;
  7. int a[505][505];
  8. int dp[505][505];
  9.  
  10. main()
  11. {
  12.     ios_base::sync_with_stdio(0);
  13.     cin.tie(0);
  14.     cout.tie(0);
  15.  
  16.     cin>>m>>n;
  17.     for (int i=1;i<=m;i++)
  18.     {
  19.         for (int j=1;j<=n;j++)
  20.         {
  21.             cin>>a[i][j];
  22.         }
  23.     }
  24.  
  25.     for (int i=0;i<=m+1;i++)
  26.     {
  27.         for (int j=0;j<=n+1;j++)
  28.         {
  29.             dp[i][j]=oo;
  30.         }
  31.     }
  32.  
  33.     for (int i=1;i<=m;i++)
  34.     {
  35.         dp[i][1] = a[i][1];
  36.     }
  37.  
  38.     for (int j =2;j<=n;j++)
  39.     {
  40.         for (int i = 1;i<=m;i++)
  41.         {
  42.             int res = min({dp[i-1][j-1], dp[i][j-1], dp[i+1][j-1]});
  43.             dp[i][j] = res+ a[i][j];
  44.         }
  45.     }
  46.  
  47.     int ans =oo;
  48.     for (int i =1;i<=m;i++)
  49.     {
  50.         ans =min(ans, dp[i][n]);
  51.     }
  52.  
  53.     cout<<ans;
  54. }
  55.  
Success #stdin #stdout 0s 5304KB
comments (?)
stdin 
Standard input is empty
stdout 
1000000000000000000
https://ideone.com/Q4FgUw
language:
C++14 (gcc 8.3)
created:
4 days ago
visibility:
public

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